<template>
  <div>
    <!-- 面包屑导航区域！可以分装成为一个组件 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 输入框区域 -->
    <!-- 卡片布局 -->
    <el-card class="box-card">
      <!-- 栅格布局 gutter设置列间距 span设置列占的格子24单位 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <div>
            <el-input placeholder="请输入内容"
                      class="input-with-select"
                      v-model="queryInfo.query"
                      clearable
                      @clear="getUserList">
              <!-- clearable包含清空图标按钮,clear指令点击清空图标按钮刷新页面数据 -->
              <!-- 搜索按钮 可通过 slot 来指定在 input 中前置或者后置内容。 -->
              <el-button slot="append"
                         icon="el-icon-search"
                         type="primary"
                         @click="getUserList"></el-button>
            </el-input>
          </div>
        </el-col>
        <el-col :span="4">
          <div class="grid-content bg-purple">
            <el-button slot="append"
                       type="primary"
                       @click="addDialogVisible=!addDialogVisible">添加用户</el-button>
          </div>
        </el-col>
      </el-row>
    </el-card>
    <!-- 用户表格数据区域 -->
    <el-table :data="userList"
              border
              stripe>
      <el-table-column type="index"
                       label="#"></el-table-column>
      <el-table-column label="姓名"
                       prop="username"></el-table-column>
      <el-table-column label="邮箱"
                       prop="email"></el-table-column>
      <el-table-column label="电话"
                       prop="mobile"></el-table-column>
      <el-table-column label="角色"
                       prop="role_name"></el-table-column>
      <el-table-column label="状态">
        <!-- 通过作用域插槽接收scope，可以通过scope点出当前的行数据,会覆盖prop的数据使之失效 -->
        <template slot-scope="scope">
          <!-- {{scope.row}} -->
          <el-switch v-model="scope.row.mg_state"
                     active-color="#13ce66"
                     inactive-color="#ff4949"
                     @change="userStateChanged(scope.row)">
          </el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作"
                       width="180px">
        <template slot-scope="scope">
          <!-- 修改按钮 -->
          <el-button type="primary"
                     size="mini"
                     icon="el-icon-edit"
                     @click="showEditDialog(scope.row.id)"></el-button>
          <!-- 删除按钮 -->
          <el-button type="danger"
                     size="mini"
                     icon="el-icon-delete"
                     @click="removeUserById(scope.row.id)"></el-button>
          <el-tooltip effect="dark"
                      content="分配角色"
                      placement="top"
                      :enterable="false">
            <!-- 分配角色按钮 -->
            <el-button type="warning"
                       size="mini"
                       icon="el-icon-setting"
                       @click="setRole(scope.row)"></el-button>
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination @size-change="handleSizeChange"
                   @current-change="handleCurrentChange"
                   :current-page="queryInfo.pagenum"
                   :page-sizes="[2, 5, 8, 10]"
                   :page-size="queryInfo.pagesize"
                   layout="total, sizes, prev, pager, next, jumper"
                   :total="total">
      <!--
          1.size-change:改变页面数据行数事件
          2.current-change：改变页码事件
          3.current-page：当前的页码
          4.page-sizes：分页页面数据行大小数组
          5.page-size：当前页面数据行数
          6.layout：显示展示的分页组件的功能子组件
          -->
    </el-pagination>
    <!-- 添加功能对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑功能对话框 -->
    <el-dialog title="修改用户"
               :visible.sync="editDialogVisible"
               width="50%"
               center
               @click="editDialogClosed">
      <el-form :model="editForm"
               status-icon
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input disabled
                    v-model="editForm.username"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRoleDialogVisible"
               width="50%"
               close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>
          <el-select v-model="selectedRoleId"
                     placeholder="请选择">
            <el-option v-for="item in rolesList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <!-- 底部按钮区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) return cb()
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号码规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号码正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) return cb()
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      queryInfo: {
        // 查询字段
        query: '',
        // 当前页码
        pagenum: 2,
        // 当前显示的行数
        pagesize: 2
      },
      userList: [],
      total: 10,
      // 添加用户窗口显示开关
      addDialogVisible: false,
      // 编辑用户窗口显示开关
      editDialogVisible: false,
      // 添加用户的表单数据对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 编辑用户的表单数据对象 空对象直接接收接口传过来的属性数据
      editForm: {

      },
      // 添加用户数据验证对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', tigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3-10个字符之间', tigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', tigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在6-15个字符之间', tigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 添加用户数据验证对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表(下拉列表数据源)
      rolesList: [],
      // 当前选取的下拉列表角色id值
      selectedRoleId: ''
    };
  },
  created () {
    this.getUserList();
  },
  methods: {
    // 获取用户列表数据
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList();
    },
    // 监听pagenum改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList();
    },
    // 监听swich开关状态的改变
    async userStateChanged (userinfo) {
      console.log(userinfo);
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error('更新用户状态失败');
      }
      this.$message.success('更新用户状态成功');
    },
    // 监听添加用户对话框关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser () {
      // 触发addFormRef组件上的验证方法
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: result } = await this.$http.post('users', this.addForm)
        if (result.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加用户成功')
        // 关闭添加功能对话框
        this.addDialogVisible = false
        // 刷新表格数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      // console.log(id);
      const { data: result } = await this.$http.get('users/' + id)
      if (result.meta.status !== 200) return this.$message.error('查询用户数据失败')
      this.editForm = result.data
      this.editDialogVisible = true
    },
    // 监听添加用户对话框关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 点击按钮编辑用户
    editUser () {
      // 触发addFormRef组件上的验证方法
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: result } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (result.meta.status !== 200) return this.$message.error('更新用户失败')
        this.$message.success('更新用户成功')
        // 关闭编辑功能对话框
        this.editDialogVisible = false
        // 刷新表格数据
        this.getUserList()
      })
    },
    // 点击按钮删除用户
    async removeUserById (id) {
      const confirmResult = await this.$confirm('是否永久删除该用户数据?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 使用catch接收取消行为的错误

      // 如果confirmResult为cancel则代表用户取消删除操作，如果为confirm则代表用户确认删除操作
      // console.log(confirmResult);
      if (confirmResult === 'cancel') {
        return this.$message({
          type: 'info',
          message: '已取消删除'
        });
      }
      // .then(() => {
      //   this.$message({
      //     type: 'success',
      //     message: '删除成功!'
      //   });
      // }).catch(() => {
      //   this.$message({
      //     type: 'info',
      //     message: '已取消删除'
      //   });
      // });

      const { data: result } = await this.$http.delete('users/' + id)
      if (result.meta.status !== 200) return this.$message.error('删除用户失败！')
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展开对话框之前，获取所有角色列表
      const { data: result } = await this.$http.get('roles')
      if (result.meta.status !== 200) return this.$message.error('获取角色列表失败')
      this.rolesList = result.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色')
      const { data: result } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (result.meta.status !== 200) return this.$message.error('更新角色失败!')
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang='scss' scoped>
</style>
